StumbleUpon and Rollyo

Two more online apps I will be using to create online resource lists for research projects are StumbleUpon and Rollyo. Any tool that will ultimately save me time with my own web discovery is worth its weight in gold. I realize it may take a while to get to a streamlined use of StumbleUpon. Rollyo will be great in an elementary school, providing credible websites to students which are efficient and safe. Lessons on evaluating websites can be done on another day :)